./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/13-privatized_52-refine-protected-loop2-small_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i ./goblint.2024-05-21_14-57-05.files/protection/13-privatized_52-refine-protected-loop2-small_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:42:54,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:42:54,684 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:42:54,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:42:54,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:42:54,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:42:54,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:42:54,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:42:54,703 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:42:54,703 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:42:54,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:42:54,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:42:54,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:42:54,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:42:54,704 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:42:54,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:42:54,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:42:54,705 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:42:54,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:42:54,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:42:54,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:42:54,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:42:54,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:42:54,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:42:54,707 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:42:54,707 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:42:54,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:42:54,708 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:42:54,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:42:54,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:42:54,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:42:54,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:42:54,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:42:54,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:42:54,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:42:54,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:42:54,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:42:54,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:42:54,710 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:42:54,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:42:54,710 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:42:54,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:42:54,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:42:54,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:42:54,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:42:54,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:42:54,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:42:54,968 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:42:54,972 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:42:54,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2024-06-14 11:42:55,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:42:56,164 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:42:56,164 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2024-06-14 11:42:56,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c3ee5373/9a8db785e990437f8d748fdc34df1894/FLAG1351acd3a [2024-06-14 11:42:56,189 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c3ee5373/9a8db785e990437f8d748fdc34df1894 [2024-06-14 11:42:56,191 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:42:56,193 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:42:56,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/13-privatized_52-refine-protected-loop2-small_true.yml/witness.yml [2024-06-14 11:42:56,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:42:56,252 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:42:56,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:42:56,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:42:56,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:42:56,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:42:56" (1/2) ... [2024-06-14 11:42:56,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd732a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:42:56, skipping insertion in model container [2024-06-14 11:42:56,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:42:56" (1/2) ... [2024-06-14 11:42:56,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f5b53cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:42:56, skipping insertion in model container [2024-06-14 11:42:56,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:42:56" (2/2) ... [2024-06-14 11:42:56,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd732a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56, skipping insertion in model container [2024-06-14 11:42:56,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:42:56" (2/2) ... [2024-06-14 11:42:56,260 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:42:56,281 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:42:56,282 INFO L97 edCorrectnessWitness]: Location invariant before [L703-L703] (! multithreaded || (A_locked || ((((0 <= g && g <= 999) && g <= 32767) && g % 999 == 0) && (g == 0 || g == 999)))) && (! multithreaded || (((0 <= g && g <= 1000) && g <= 32767) && ((g == 0 || g == 999) || g == 1000))) [2024-06-14 11:42:56,283 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:42:56,283 INFO L103 edCorrectnessWitness]: ghost_variable A_locked = 0 [2024-06-14 11:42:56,283 INFO L103 edCorrectnessWitness]: ghost_variable B_locked = 0 [2024-06-14 11:42:56,283 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] A_locked = 1; [2024-06-14 11:42:56,284 INFO L106 edCorrectnessWitness]: ghost_update [L694-L694] B_locked = 1; [2024-06-14 11:42:56,284 INFO L106 edCorrectnessWitness]: ghost_update [L702-L702] multithreaded = 1; [2024-06-14 11:42:56,284 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] A_locked = 0; [2024-06-14 11:42:56,284 INFO L106 edCorrectnessWitness]: ghost_update [L695-L695] B_locked = 0; [2024-06-14 11:42:56,317 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:42:56,554 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:42:56,564 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:42:56,621 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:42:56,648 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:42:56,649 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56 WrapperNode [2024-06-14 11:42:56,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:42:56,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:42:56,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:42:56,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:42:56,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,677 INFO L138 Inliner]: procedures = 162, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2024-06-14 11:42:56,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:42:56,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:42:56,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:42:56,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:42:56,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,687 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,696 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-06-14 11:42:56,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,697 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:42:56,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:42:56,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:42:56,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:42:56,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (1/1) ... [2024-06-14 11:42:56,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:42:56,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:42:56,728 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) [2024-06-14 11:42:56,738 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 [2024-06-14 11:42:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-06-14 11:42:56,780 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-06-14 11:42:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-14 11:42:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:42:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:42:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 11:42:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-14 11:42:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-14 11:42:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:42:56,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:42:56,782 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:42:56,893 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:42:56,894 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:42:57,028 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:42:57,028 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:42:57,125 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:42:57,128 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-06-14 11:42:57,128 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:42:57 BoogieIcfgContainer [2024-06-14 11:42:57,128 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:42:57,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:42:57,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:42:57,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:42:57,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:42:56" (1/4) ... [2024-06-14 11:42:57,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16003e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:42:57, skipping insertion in model container [2024-06-14 11:42:57,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:42:56" (2/4) ... [2024-06-14 11:42:57,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16003e9a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:42:57, skipping insertion in model container [2024-06-14 11:42:57,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:56" (3/4) ... [2024-06-14 11:42:57,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16003e9a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:42:57, skipping insertion in model container [2024-06-14 11:42:57,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:42:57" (4/4) ... [2024-06-14 11:42:57,137 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2024-06-14 11:42:57,151 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:42:57,151 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-14 11:42:57,151 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:42:57,174 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:42:57,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 19 transitions, 42 flow [2024-06-14 11:42:57,225 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-06-14 11:42:57,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:42:57,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 18 events. 1/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 14 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-06-14 11:42:57,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 19 transitions, 42 flow [2024-06-14 11:42:57,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 18 transitions, 39 flow [2024-06-14 11:42:57,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:42:57,244 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=false, 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;@4f4f993c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:42:57,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-06-14 11:42:57,253 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:42:57,255 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:42:57,255 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:42:57,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:42:57,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:42:57,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-14 11:42:57,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:42:57,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2118710448, now seen corresponding path program 1 times [2024-06-14 11:42:57,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:42:57,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189578851] [2024-06-14 11:42:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:42:57,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:42:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:42:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:42:57,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:42:57,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189578851] [2024-06-14 11:42:57,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189578851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:42:57,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:42:57,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:42:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90136247] [2024-06-14 11:42:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:42:57,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:42:57,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:42:57,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:42:57,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:42:57,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 19 [2024-06-14 11:42:57,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-06-14 11:42:57,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:42:57,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 19 [2024-06-14 11:42:57,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:42:57,677 INFO L124 PetriNetUnfolderBase]: 20/63 cut-off events. [2024-06-14 11:42:57,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:42:57,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 63 events. 20/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 6 based on Foata normal form. 5/58 useless extension candidates. Maximal degree in co-relation 104. Up to 39 conditions per place. [2024-06-14 11:42:57,679 INFO L140 encePairwiseOnDemand]: 15/19 looper letters, 12 selfloop transitions, 2 changer transitions 2/21 dead transitions. [2024-06-14 11:42:57,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 21 transitions, 77 flow [2024-06-14 11:42:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:42:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:42:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-06-14 11:42:57,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2024-06-14 11:42:57,689 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 39 flow. Second operand 3 states and 37 transitions. [2024-06-14 11:42:57,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 21 transitions, 77 flow [2024-06-14 11:42:57,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:42:57,717 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 46 flow [2024-06-14 11:42:57,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2024-06-14 11:42:57,720 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2024-06-14 11:42:57,721 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 46 flow [2024-06-14 11:42:57,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-06-14 11:42:57,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:42:57,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:42:57,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:42:57,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-14 11:42:57,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:42:57,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2139854102, now seen corresponding path program 1 times [2024-06-14 11:42:57,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:42:57,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621493928] [2024-06-14 11:42:57,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:42:57,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:42:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:42:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:42:57,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:42:57,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621493928] [2024-06-14 11:42:57,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621493928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:42:57,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:42:57,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:42:57,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768406636] [2024-06-14 11:42:57,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:42:57,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:42:57,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:42:57,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:42:57,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:42:57,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 19 [2024-06-14 11:42:57,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-06-14 11:42:57,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:42:57,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 19 [2024-06-14 11:42:57,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:42:57,874 INFO L124 PetriNetUnfolderBase]: 12/40 cut-off events. [2024-06-14 11:42:57,875 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-14 11:42:57,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 40 events. 12/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 5 based on Foata normal form. 1/36 useless extension candidates. Maximal degree in co-relation 77. Up to 19 conditions per place. [2024-06-14 11:42:57,875 INFO L140 encePairwiseOnDemand]: 13/19 looper letters, 9 selfloop transitions, 6 changer transitions 0/20 dead transitions. [2024-06-14 11:42:57,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 20 transitions, 84 flow [2024-06-14 11:42:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:42:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:42:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2024-06-14 11:42:57,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-14 11:42:57,877 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 6 states and 51 transitions. [2024-06-14 11:42:57,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 20 transitions, 84 flow [2024-06-14 11:42:57,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:42:57,879 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 61 flow [2024-06-14 11:42:57,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=61, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2024-06-14 11:42:57,880 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2024-06-14 11:42:57,880 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 61 flow [2024-06-14 11:42:57,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-06-14 11:42:57,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:42:57,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:42:57,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:42:57,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-14 11:42:57,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:42:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1911385879, now seen corresponding path program 1 times [2024-06-14 11:42:57,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:42:57,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397100175] [2024-06-14 11:42:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:42:57,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:42:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:42:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:42:58,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:42:58,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397100175] [2024-06-14 11:42:58,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397100175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:42:58,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:42:58,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:42:58,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941452039] [2024-06-14 11:42:58,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:42:58,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:42:58,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:42:58,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:42:58,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:42:58,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 19 [2024-06-14 11:42:58,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-06-14 11:42:58,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:42:58,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 19 [2024-06-14 11:42:58,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:42:58,063 INFO L124 PetriNetUnfolderBase]: 8/35 cut-off events. [2024-06-14 11:42:58,063 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-14 11:42:58,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 35 events. 8/35 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 28 event pairs, 1 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 68. Up to 17 conditions per place. [2024-06-14 11:42:58,064 INFO L140 encePairwiseOnDemand]: 17/19 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2024-06-14 11:42:58,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 18 transitions, 87 flow [2024-06-14 11:42:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:42:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:42:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2024-06-14 11:42:58,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-06-14 11:42:58,067 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 61 flow. Second operand 3 states and 32 transitions. [2024-06-14 11:42:58,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 18 transitions, 87 flow [2024-06-14 11:42:58,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 70 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-14 11:42:58,068 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2024-06-14 11:42:58,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2024-06-14 11:42:58,069 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2024-06-14 11:42:58,072 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2024-06-14 11:42:58,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-06-14 11:42:58,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-06-14 11:42:58,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-06-14 11:42:58,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:42:58,076 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-06-14 11:42:58,078 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:42:58,078 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:42:58,082 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-06-14 11:42:58,082 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-06-14 11:42:58,082 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:42:58 BasicIcfg [2024-06-14 11:42:58,083 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:42:58,083 INFO L158 Benchmark]: Toolchain (without parser) took 1831.07ms. Allocated memory is still 146.8MB. Free memory was 106.9MB in the beginning and 65.0MB in the end (delta: 41.9MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. [2024-06-14 11:42:58,085 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 69.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:42:58,085 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 146.8MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:42:58,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.90ms. Allocated memory is still 146.8MB. Free memory was 106.2MB in the beginning and 81.6MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-14 11:42:58,087 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.03ms. Allocated memory is still 146.8MB. Free memory was 81.6MB in the beginning and 79.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:42:58,088 INFO L158 Benchmark]: Boogie Preprocessor took 27.32ms. Allocated memory is still 146.8MB. Free memory was 79.6MB in the beginning and 77.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:42:58,088 INFO L158 Benchmark]: RCFGBuilder took 422.73ms. Allocated memory is still 146.8MB. Free memory was 77.5MB in the beginning and 93.1MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-14 11:42:58,088 INFO L158 Benchmark]: TraceAbstraction took 952.51ms. Allocated memory is still 146.8MB. Free memory was 92.3MB in the beginning and 65.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2024-06-14 11:42:58,093 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 69.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 146.8MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.90ms. Allocated memory is still 146.8MB. Free memory was 106.2MB in the beginning and 81.6MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.03ms. Allocated memory is still 146.8MB. Free memory was 81.6MB in the beginning and 79.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.32ms. Allocated memory is still 146.8MB. Free memory was 79.6MB in the beginning and 77.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 422.73ms. Allocated memory is still 146.8MB. Free memory was 77.5MB in the beginning and 93.1MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 952.51ms. Allocated memory is still 146.8MB. Free memory was 92.3MB in the beginning and 65.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 703]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 31 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 74 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 1 mSDtfsCounter, 74 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 11:42:58,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE